error[E0391]: cycle detected when simplifying constant for the type system `TRAIT_REF_BAR` --> $DIR/issue-24949-assoc-const-static-recursion-trait.rs:7:1 | LL | const TRAIT_REF_BAR: u32 = ::BAR; | ^^^^^^^^^^^^^^^^^^^^^^^^ | note: ...which requires const-evaluating + checking `TRAIT_REF_BAR`... --> $DIR/issue-24949-assoc-const-static-recursion-trait.rs:7:28 | LL | const TRAIT_REF_BAR: u32 = ::BAR; | ^^^^^^^^^^^^^^^^^^^^^ note: ...which requires simplifying constant for the type system `::BAR`... --> $DIR/issue-24949-assoc-const-static-recursion-trait.rs:12:5 | LL | const BAR: u32 = TRAIT_REF_BAR; | ^^^^^^^^^^^^^^ note: ...which requires const-evaluating + checking `::BAR`... --> $DIR/issue-24949-assoc-const-static-recursion-trait.rs:12:5 | LL | const BAR: u32 = TRAIT_REF_BAR; | ^^^^^^^^^^^^^^ note: ...which requires caching mir of `::BAR` for CTFE... --> $DIR/issue-24949-assoc-const-static-recursion-trait.rs:12:5 | LL | const BAR: u32 = TRAIT_REF_BAR; | ^^^^^^^^^^^^^^ note: ...which requires elaborating drops for `::BAR`... --> $DIR/issue-24949-assoc-const-static-recursion-trait.rs:12:22 | LL | const BAR: u32 = TRAIT_REF_BAR; | ^^^^^^^^^^^^^ = note: ...which again requires simplifying constant for the type system `TRAIT_REF_BAR`, completing the cycle = note: cycle used when running analysis passes on this crate = note: see https://rustc-dev-guide.rust-lang.org/overview.html#queries and https://rustc-dev-guide.rust-lang.org/query.html for more information error: aborting due to 1 previous error For more information about this error, try `rustc --explain E0391`.